<template>
  <div style="width: 100%;height: 100%" :loading="true">
    <div v-if="isCas === false" class="login" :style="'background-image:url('+ Background +');'">
      <el-form ref="loginForm" :model="loginForm" :rules="loginRules" label-position="left" label-width="0px" class="login-form">
        <h3 class="title">
          系统登录
        </h3>
        <el-form-item prop="username">
          <el-input v-model="loginForm.username" type="text" auto-complete="off" placeholder="账号">
            <svg-icon slot="prefix" icon-class="user" class="el-input__icon input-icon" />
          </el-input>
        </el-form-item>
        <el-form-item prop="password">
          <el-input v-model="loginForm.password" type="password" auto-complete="off" placeholder="密码" @keyup.enter.native="handleLogin">
            <svg-icon slot="prefix" icon-class="password" class="el-input__icon input-icon" />
          </el-input>
        </el-form-item>
        <el-form-item prop="code">
          <el-input v-model="loginForm.code" auto-complete="off" placeholder="验证码" style="width: 63%" @keyup.enter.native="handleLogin">
            <svg-icon slot="prefix" icon-class="validCode" class="el-input__icon input-icon" />
          </el-input>
          <div class="login-code">
            <img :src="codeUrl" @click="getCode">
          </div>
        </el-form-item>
        <el-checkbox v-model="loginForm.rememberMe" style="margin:0 0 25px 0;">
          记住我
        </el-checkbox>
        <el-form-item style="width:100%;">
          <el-button :loading="loading" size="medium" type="primary" style="width:100%;" @click.native.prevent="handleLogin">
            <span v-if="!loading">登 录</span>
            <span v-else>登 录 中...</span>
          </el-button>
        </el-form-item>
      </el-form>
      <!--  底部  -->
      <div v-if="$store.state.settings.showFooter" id="el-login-footer">
        <span v-html="$store.state.settings.footerTxt" />
        <span> ⋅ </span>
        <a target="_blank">{{ $store.state.settings.caseNumber }}</a>
      </div>
    </div>
    <div v-if="numeral === 2 && binding === true" class="login" :style="'background-image:url('+ Background +');'">
      <el-form
        ref="loginForm"
        :model="loginForm"
        :rules="loginRules"
        label-position="left"
        label-width="0px"
        class="login-form"
      >
        <h3 class="title">
          用户绑定
        </h3>
        <el-form-item prop="username">
          <el-input v-model="loginForm.username" type="text" auto-complete="off" placeholder="账号">
            <svg-icon slot="prefix" icon-class="user" class="el-input__icon input-icon" />
          </el-input>
        </el-form-item>
        <el-form-item prop="password">
          <el-input
            v-model="loginForm.password"
            type="password"
            auto-complete="off"
            placeholder="密码"
            @keyup.enter.native="handleLogin"
          >
            <svg-icon slot="prefix" icon-class="password" class="el-input__icon input-icon" />
          </el-input>
        </el-form-item>
        <el-form-item prop="code">
          <el-input
            v-model="loginForm.code"
            auto-complete="off"
            placeholder="验证码"
            style="width: 63%"
            @keyup.enter.native="handleLogin"
          >
            <svg-icon slot="prefix" icon-class="validCode" class="el-input__icon input-icon" />
          </el-input>
          <div class="login-code">
            <img :src="codeUrl" @click="getCode">
          </div>
        </el-form-item>
        <el-form-item style="width:100%;">
          <el-button
            :loading="loading"
            size="medium"
            type="primary"
            style="width:100%;"
            @click.native.prevent="handleAppLogin"
          >
            <span v-if="!loading">登 录</span>
            <span v-else>登 录 中...</span>
          </el-button>
        </el-form-item>
      </el-form>
      <!--  底部  -->
      <div v-if="$store.state.settings.showFooter" id="el-login-footer">
        <span v-html="$store.state.settings.footerTxt" />
      </div>
    </div>
  </div>
</template>
<script>
import { encrypt } from '@/utils/rsaEncrypt';
import Config from '@/settings';
import { getCodeImg, getOpenId } from '@/api/login';
import Cookies from 'js-cookie';
import Background from '@/assets/images/background.jpg';
export default {
  name: 'Login',
  data() {
    return {
      Background: Background,
      codeUrl: '',
      cookiePass: '',
      isCas: true,
      binding: false,
      pt: 0,
      loginForm: {
        username: '',
        password: '',
        rememberMe: false,
        code: '',
        uuid: ''
      },
      loginRules: {
        username: [{ required: true, trigger: 'blur', message: '用户名不能为空' }],
        password: [{ required: true, trigger: 'blur', message: '密码不能为空' }],
        code: [{ required: true, trigger: 'change', message: '验证码不能为空' }]
      },
      loading: false,
      redirect: '',
      numeral: null,
      openId: ''
    };
  },
  watch: {
    $route: {
      handler: function(route) {
        this.redirect = route.query && route.query.redirect;
        this.numeral = route.query && route.query.numeral;
        this.pt = route.query && route.query.pt;
      },
      immediate: true
    }
  },
  created() {
    // 是否企业企业微信
    if (this.numeral === 2 && Config.isWeiXin && this.pt !== 3) {
      this.getWxCode();
    }
    if (Config.isCas) {
      this.isCas = true;
      window.open('/cas?redirect=/s/index', '_self');
    } else {
      this.isCas = false;
    }
    // 获取验证码
    this.getCode();
    // 获取用户名密码等Cookie
    this.getCookie();
    // token 过期提示
    this.point();
  },
  methods: {
    getCode() {
      getCodeImg().then(res => {
        this.codeUrl = res.img;
        this.loginForm.uuid = res.uuid;
      });
    },
    getCookie() {
      const username = Cookies.get('username');
      let password = Cookies.get('password');
      const rememberMe = Cookies.get('rememberMe');
      // 保存cookie里面的加密后的密码
      this.cookiePass = password === undefined ? '' : password;
      password = password === undefined ? this.loginForm.password : password;
      this.loginForm = {
        username: username === undefined ? this.loginForm.username : username,
        password: password,
        rememberMe: rememberMe === undefined ? false : Boolean(rememberMe),
        code: ''
      };
    },
    handleLogin() {
      this.$refs.loginForm.validate(valid => {
        const user = {
          username: this.loginForm.username,
          password: this.loginForm.password,
          rememberMe: this.loginForm.rememberMe,
          code: this.loginForm.code,
          uuid: this.loginForm.uuid
        };
        if (user.password !== this.cookiePass) {
          user.password = encrypt(user.password);
        }
        if (valid) {
          this.loading = true;
          this.$store.dispatch('Login', user).then(() => { // 执行登录
            this.loading = false;
            this.$router.push({ path: this.redirect || '/' });// 登录成功，跳转到指定地址，或者根路径
          }).catch(() => { // 登录异常，重新获取验证码
            this.loading = false;
            this.getCode();
          });
        } else {
          console.log('error submit!!');
          return false;
        }
      });
    },
    handleAppLogin() {
      this.$refs.loginForm.validate(valid => {
        const user = {
          username: this.loginForm.username,
          password: this.loginForm.password,
          rememberMe: this.loginForm.rememberMe,
          openId: this.openId,
          code: this.loginForm.code,
          uuid: this.loginForm.uuid
        };
        if (user.password !== this.cookiePass) {
          user.password = encrypt(user.password);
        }
        if (valid) {
          this.loading = true;
          this.$store.dispatch('LoginWx', user).then(() => { // 执行登录
            this.loading = false;
            this.$router.push({ path: this.redirect || '/s/index' });// 登录成功，跳转到指定地址，或者根路径
          }).catch(() => { // 登录异常，重新获取验证码
            this.loading = false;
            this.getCode();
          });
        } else {
          console.log('error submit!!');
          return false;
        }
      });
    },
    point() {
      const point = Cookies.get('point') !== undefined;
      if (point) {
        this.$notify({
          title: '提示',
          message: '当前登录状态已过期，请重新登录！',
          type: 'warning',
          duration: 5000
        });
        Cookies.remove('point');
      }
    },
    getWxCode() {
      const code = this.$route.query.code;
      if (code == null || undefined === code || code === '') {
        const url = 'https://open.weixin.qq.com/connect/oauth2/authorize?appid=' + Config.appid + '&redirect_uri=';
        const client = Config.redirectUrl + '?redirect=' + this.$route.query.redirect + '&numeral=2';
        const params = '&response_type=code&scope=snsapi_userinfo&agentid=' + Config.agentId + '#wechat_redirect';
        window.location.replace(url + encodeURI(client) + params);
      } else {
        getOpenId(code).then(res => {
          const { state, openId } = res;
          if (state === 300) {
            this.binding = false;
            this.$store.dispatch('openIdLogin', res).then(() => {
              if (undefined !== this.redirect && this.redirect !== null) {
                this.$router.push({ path: this.redirect }); // 登录成功，跳转到指定地址，或者根路径
              } else {
                this.$router.push({ path: '/s/index&numeral=2' });
              }
            });
          } else if (state === 200) { // 执行登录绑定
            this.openId = openId;
            this.binding = true;
          } else {
            this.$router.push({ path: '/login?error=true&numeral=2' });
          }
        }).catch(error => {
          console.log(error);
          this.$router.push({ path: '/login?error=true&numeral=2' });
        });
      }
    }
  }
};
</script>

<style rel="stylesheet/scss" lang="scss">
  .login {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100%;
    background-size: cover;
  }
  .title {
    margin: 0 auto 30px auto;
    text-align: center;
    color: #707070;
  }

  .login-form {
    border-radius: 6px;
    background: #ffffff;
    width: 385px;
    padding: 25px 25px 5px 25px;
    .el-input {
      height: 38px;
      input {
        height: 38px;
      }
    }
    .input-icon{
      height: 39px;width: 14px;margin-left: 2px;
    }
  }
  .login-tip {
    font-size: 13px;
    text-align: center;
    color: #bfbfbf;
  }
  .login-code {
    width: 33%;
    display: inline-block;
    height: 38px;
    float: right;
    img{
      cursor: pointer;
      vertical-align:middle
    }
  }
</style>
